CN112222709B

CN112222709B - Method for adjusting posture of clutch type welding fixture

Info

Publication number: CN112222709B
Application number: CN202011246001.6A
Authority: CN
Inventors: 王业进
Original assignee: Yuexi Shixing Machinery Equipment Co ltd
Current assignee: Yuexi Shixing Machinery Equipment Co ltd
Priority date: 2020-11-10
Filing date: 2020-11-10
Publication date: 2023-07-14
Anticipated expiration: 2040-11-10
Also published as: CN112222709A

Abstract

The invention relates to a posture adjusting method of a clutch type welding fixture, which can adjust the screw pitch and the outer diameter of a clamping opening preset on a spiral line on the welding fixture, is applicable to spiral blades with various screw pitches and outer diameters, supports and positions the spiral blades, then cooperates the spiral blades with a tubular assembly body, and finally welds the blades and the tubular assembly body together along a spiral track through a welding device. The method comprises the steps of starting a B adjusting unit, adjusting the clamping units to a position close to the middle of the clamp body, enabling all the A clutch parts on the A adjusting unit to be in a transmission connection state, adjusting the A driving parts on the A adjusting unit to synchronously adjust the intervals among all the clamping ports on all the clamping units, meeting the pitch requirement of a preset spiral line, then starting the B adjusting unit again, adjusting all the clamping units to move towards the central position far from the clamp body, adjusting all the A clutch parts to be in a transmission disconnection state, and meeting the outer diameter requirement of the preset spiral line.

Description

Method for adjusting posture of clutch type welding fixture

Technical Field

The invention relates to the field of helical blade welding equipment, in particular to a method for adjusting the posture of a clutch type welding fixture for helical blades.

Background

The conventional welding method of the helical blade is to divide the integral helical blade into a plurality of sub-blades, then match the sub-blades with a shaft or a steel cylinder respectively, weld each sub-blade on an assembly body assembled with the sub-blade by manual welding of one piece, and also connect each sub-blade together by welding. The welding mode is low in efficiency, manual welding quality is difficult to ensure, and the quality of products can be influenced by connecting the blades together through welding.

Disclosure of Invention

In order to solve the problems, the invention provides a method for adjusting the gesture of a clutch type welding fixture.

The technical scheme adopted by the invention is as follows.

The clamping unit is used for being adjusted to a position close to the middle of the clamp body, each A clutch part on the A adjusting unit is in a transmission connection state, the A driving part which forms the A adjusting unit is adjusted to synchronously adjust the distance between each clamping opening on each clamping unit, the pitch requirement of a preset spiral line is met, then the B adjusting unit is started again to adjust each clamping unit to move towards the central position far away from the clamp body, each A clutch part is adjusted to be in a transmission disconnection state, and the outer diameter requirement of the preset spiral line is met.

Preferably, the A clutch part is formed by a movably mounted clutch gear, and the switching of the A clutch part between a transmission connection state and a transmission disconnection state is realized by adjusting the movement of the clutch gear.

Preferably, an a limiting part is further arranged beside the a clutch gear, and the a limiting part is used for limiting the rotation freedom degree of the a clutch gear when the a clutch gear is in a transmission disconnection state.

Preferably, the a-rack movably mounted relative to the a-clutch gear is adopted to form the a-restriction portion, the a-rack is adjusted to be meshed with the a-gear, and the degree of freedom of the a-rack in the body length direction is restricted, so that the restriction of the degree of freedom of the a-clutch gear is realized.

Preferably, the a rack is disposed on the outer side of the a clutch gear, and is disposed to be floatingly mounted in the radial direction of the clamp body, and when the clamping unit approaches the center of the clamp body, the abutting portion on the clamp body abuts against the a rack to separate the a rack from the a clutch gear.

Preferably, the clamping unit A is movably mounted on the clamp body along the radial direction of the clamp body, the regulating part A is formed by adopting the regulating shaft A, the clamping parts are slidably mounted on the fixed rods on the clamping unit at equal intervals, the movable rods on the clamping unit are provided with movable parts which are movably mounted at equal intervals, the movable parts are assembled and connected with the clamping parts through interval connecting rods, and the regulating shaft A is regulated to rotate through the clutch gear so as to realize the regulation of the interval between the movable rods and the fixed rods.

Preferably, two A1 and A2 adjusting sections with opposite screw threads are arranged on an A adjusting shaft, A nut parts are respectively arranged on the A1 and A2 adjusting sections, an A adjusting part is further arranged on a movable rod, the A adjusting part and the A nut parts are connected by adopting an adjusting connecting rod, the A adjusting shaft is rotated to enable the distance between the A adjusting shaft and the movable rod to change in a trend a, the distance between the movable rod and the fixed rod to change in a trend b, the trends a and b are opposite, and the trend a is that the distance is increased or decreased.

Preferably, a B adjusting shaft is arranged at the center of the clamp body, B1 and B2 adjusting sections with opposite screw threads are arranged on the B adjusting shaft, B ring nut sleeves forming a screw nut adjusting mechanism with the B1 and B2 adjusting sections are respectively arranged on the B1 and B2 adjusting sections, an A mounting part is arranged on the clamping unit, the A mounting part and the two B ring nuts are connected by adopting a supporting connecting rod, and the B adjusting shaft is rotated to enable the clamping unit to move close to or far away from the center of the clamp body.

Preferably, the A driving part is formed by an A driving gear, and the A clutch gear is meshed with the A driving gear when the A clutch gear is in a transmission connection state.

Preferably, the a mounting part is arranged on the a adjusting shaft, the B1 adjusting section and the B2 adjusting section are respectively arranged at two ends of the B adjusting shaft, and the B1 adjusting section and the B2 adjusting section are respectively arranged at two ends of the a adjusting shaft.

The beneficial effects of the invention are as follows: the method comprises the steps of firstly placing the whole spiral blade on a clamping opening of a clamp, then matching the spiral blade with a tubular assembly, then spot-welding the blade and the tubular assembly together through a welding device, and finally firmly welding the blade and the tubular assembly together along a path of the spiral blade arrangement through simultaneously rotating the blade and the tubular assembly and moving a welding gun of the welding device. The method can well realize the assembly of the helical blade and the tubular assembly body, and the automatic welding is carried out after the assembly, so that the helical blade and the tubular assembly body are firmly connected together.

Drawings

FIG. 1 is a process of assembling a helical blade on a welding assembly fixture to mate with a steel cylinder;

FIG. 2 is a process of a welding device for joining a helical blade to a steel cylinder by spot welding;

FIG. 3 is a process of a welding device connecting a helical blade with a steel cylinder by a walking helical path;

FIG. 4 is an isometric view of a welding assembly fixture;

FIG. 5 is a front view of the welding assembly fixture of FIG. 4;

FIG. 6 is a partial right side view of the welding assembly fixture of FIG. 4;

FIG. 7 is a partial right side view of the welding assembly fixture in a driven state;

FIG. 8 is a front view of the welding assembly fixture of FIG. 7;

fig. 9 is an isometric view of the welding assembly fixture of fig. 4 with a protective housing.

The reference numerals in the drawings are:

100-clamp body, 110-support frame, 111-left and right support slide rail, 120-protection shell, 200-clamping unit, 210-clamping part, 211-clamping port, 220-mounting frame, 221-fixed rod, 222-movable rod, 223-movable part, 225-space connecting rod, 300-A adjusting unit, 310-A adjusting part, 311-A adjusting shaft, 312-A1 adjusting part, 313-A2 adjusting part, 314-A nut part, 315-adjusting connecting rod, 320-A clutch part, 321-A clutch gear, 322-A limiting part, 323-A rack, 324-A spring, 325-A abutting part, 330-A driving part, 331-A driving gear, 400-B adjusting unit, 410-B adjusting shaft, 411-B1 adjusting part, 412-B2 adjusting part, 413-B ring nut sleeve, 414-A mounting part, 415-support connecting rod, 500-steel cylinder, 600-welding device, 610-welding gun, 620-welding point, 700-steel cylinder assembly device, 800-screw blade, 900-joint device, 1000-1020-support frame, 1010-support frame, and support frame.

Detailed Description

The present invention will be specifically described with reference to examples below in order to make the objects and advantages of the present invention more apparent. It should be understood that the following text is intended to describe only one or more specific embodiments of the invention and does not limit the scope of the invention strictly as claimed.

As used herein, the terms "parallel", "perpendicular", and the like are not limited to their strict geometric definition, but include tolerances for machining or human error to be reasonable and inconsistent.

As shown in fig. 4, the fixture comprises a fixture body 100, clamping units 200 are arranged at intervals in the circumferential direction of the fixture body 100, clamping parts 210 are arranged on the clamping units 200 at intervals, clamping ports 211 are formed in the clamping parts 210, all clamping ports 211 in all the clamping parts 210 are located on a preset spiral line, an a adjusting unit for adjusting the pitch of the preset spiral line and a B adjusting unit 400 for adjusting the outer diameter of the preset spiral line are also arranged on the fixture body 100, the a adjusting unit comprises all the a adjusting parts 310, all the a clutch parts 320 and a driving part 330, all the a adjusting parts 310 are respectively arranged corresponding to the clamping units 200, all the a clutch parts 320 are respectively arranged corresponding to all the a adjusting parts 310, all the a driving parts 330 are in transmission connection with all the a adjusting parts 310 through all the a clutch parts 320, and all the a clutch parts 320, the a driving part 330 and the B adjusting unit 400 are in the following two states of X and Y: x state: starting the B adjusting units 400 to adjust each clamping unit 200 to move to a position close to the center of the clamp body 100, wherein each A clutch part 320 is in a transmission connection state, and operating the A driving part 330 to synchronously adjust the spacing of the clamping ports 211 on each clamping unit 200; y state: starting the B adjusting units 400 to adjust each clamping unit 200 to move to the side far away from the center of the clamp body 100, and turning each A clutch part 320 to a transmission disconnection state, so that each clamping opening 211 on the clamping unit 200 falls onto a preset spiral line respectively; the preset spiral line is a spiral line consistent with the state that the spiral blade 800 needs to be adjusted and fixed.

As shown in fig. 1, the screw blades 800 are placed on the respective clamping openings 211 of the clamp body 100, the clamp body 100 is rotatably mounted on the material transferring support frame 1020, and the material transferring support frame 1020 is mounted on the traveling device 1000. Each of the grip ports 211 is disposed on a predetermined spiral line. The device can adjust the pitch between the spiral lines and the outer diameter of the spiral lines to adapt to spiral blades with different sizes. After the screw blade is placed on the clamping opening 211, the screw blade 800 and the clamp body 100 are integrally moved, and the supporting cylinder 1010 on the clamp body 100 supports the middle and end portions of the clamp body 100 to be engaged with the steel cylinder 500. The steel cylinder 500 is placed on the steel cylinder assembling device 700 which can rotate the steel cylinder, and the side of the steel cylinder 500 is also provided with a guiding device 900 for receiving the other end of the overhanging state clamp. When the helical blade is about to contact the steel cylinder 500, the supporting cylinder 1010 at the end part is returned to avoid the steel cylinder 500, when the supporting cylinder 1010 at the middle part is about to contact the steel cylinder 500, the guiding device 900 is extended into one end of the steel cylinder 500, which is suspended by the supporting clamp, and then the supporting cylinder 1010 at the middle part is returned. As shown in fig. 1-2, the screw blade can be more stable by supporting both ends of the screw blade, and collision of the screw blade with the steel cylinder 500 due to deformation of the jig is reduced. Finally, the screw blade 800 and the steel cylinder 500 are coupled together by the welding device 600.

As shown in fig. 2, the helical blade 800 and the steel cylinder 500 are spot-welded together along the length direction of the steel cylinder 500 by extending a welding gun 610 on the welding device 600 into the inner cavity of the steel cylinder 500, and the helical blade 800 and the steel cylinder 500 are connected together by a welding point 620 as shown in fig. 2 and then retracted. The steel cylinder 500 and the helical blade 800 are simultaneously rotated for 120 degrees, then the helical blade and the tubular product are spot-welded together along the tube length direction of the steel cylinder 500, so that the welding gun is retreated again, the tubular object and the clamp body are simultaneously rotated for 120 degrees, and then the helical blade and the tubular product are spot-welded together along the tube length direction of the tubular product. The 3 rows of welding spots are uniformly welded along the circumferential direction of the steel cylinder 500, so that the steel cylinder 500 and the helical blade 800 are firmly connected together by spot welding.

As shown in fig. 3, after the clamp body 100 is withdrawn, the steel cylinder 500 is rotated while the welding torch 610 is moved in the longitudinal direction of the steel cylinder 500, so that the welding path is also a spiral line and the same as the pitch of the spiral blade by adjusting the rotational speed and the moving speed.

Of course, the height of the welding gun can be adjusted, the welding gun is assembled on a manipulator which can rotate and move up and down, and the manipulator is assembled on a cantilever rod which can move horizontally, so that spiral blades with different outer diameters are suitable, and various requirements of spot welding and continuous welding are met. The steel cylinder assembly apparatus 700 is also adjustable up and down to accommodate steel cylinders 500 of different outer diameters.

This manner of welding along the path of the helical blade 800 may provide a very secure connection of the helical blade to the assembled steel cylinder 500. Compared with the traditional welding helical blade, the welding helical blade has obvious advantages. The traditional method for welding the helical blade is to divide the helical blade into a plurality of small helical blades, and splice the helical blades together. Obviously, the assembly fixture can not only obviously improve the welding efficiency of the helical blade, but also improve the welding quality. The outer diameter and pitch may be adjusted so that the fixture may accommodate a variety of sizes of helical blades 800.

The specific structure of the mechanism for adjusting the pitch and the outer diameter size is specifically described below.

As shown in fig. 5, the a adjusting part 310 includes a adjusting shaft 311 rotatably mounted on the a clamping unit 200, the a adjusting shaft 311 is connected with each clamping part 210 through a transmission assembly, the length direction of the a adjusting shaft 311 is consistent with the length direction of a preset spiral line, the clamping unit 200 is slidably mounted along the radial direction of the clamp body 100, the a clutch part 320 is mounted at one end of the a adjusting shaft 311, and the switching of the a clutch part 320 between the transmission connection state and the transmission disconnection state is achieved by adjusting the radial movement of the clamping unit 200 along the clamp body 100.

The a clutch part 320 includes an a clutch gear 321 mounted on the a adjustment shaft 311, and the a drive part 330 is drivingly connected to the a clutch gear 321 when it is in a drivingly connected state.

The a driving part 330 includes an a driving gear 331, the a driving gear 331 is rotatably mounted on the fixture body 100, the a driving gear 331 coincides with the center of the fixture body 100, and the a clutch gear 321 and the a driving gear 331 are engaged and connected when the a clutch gear 321 is in a transmission connection state.

The a clutch gear 321 may be in two states, one is that the a clutch gear 321 and the a drive gear 331 are not in a connection transmission state as shown in fig. 5 and 6, and one is that the a clutch gear 321 and the a drive gear 331 are in a connection transmission state as shown in fig. 7 and 8.

The a clutch part 320 further includes an a restriction part 322, and when the a drive part 330 is in a transmission disconnected state, the a restriction part 322 restricts the rotation of the a clutch gear 321, and when the a drive part 330 is in a transmission connected state, the a restriction part 322 releases the restriction of the a clutch gear 321.

The a limiting portion 322 includes an a rack 323, the a rack 323 is movably mounted, the a rack 323 is engaged with the a clutch gear 321 to limit rotation of the a clutch gear 321, and the a rack 323 is separated from the a clutch gear 321 to release the limitation of the a clutch gear 321.

The a-rack 323 is located outside the a-clutch gear 321, the length direction of the a-rack 323 is perpendicular to the radial direction of the a-clamp body 100, the a-rack 323 is fixedly mounted along the length direction, and the a-rack 323 is movably mounted along the tooth height direction.

The a rack 323 is floatingly installed through the a spring 324, the a spring 324 drives the a rack 323 and the a clutch gear 321 to be in meshed connection, the a rack 323 is assembled on the clamping unit 200, an a abutting portion 325 is arranged on a moving path of the a rack 323, and the a abutting portion 325 abuts against the a rack 323 to enable the a rack 323 and the a clutch gear 321 to be in a separated state.

As shown in fig. 6, when the a-clutch gear 321 and the a-drive gear 331 are not in a connected transmission state, the a-clutch gear 321 is restrained from rotating by the a-rack 323. As shown in fig. 7, when the a-clutch gear 321 and the a-drive gear 331 are in a connected transmission state, the a-rack 323 is restrained by the a-abutment 325 so that the a-clutch gear 321 can rotate.

As shown in fig. 8, for the front view of the clamp with the clamping part removed, the clamp body 100 is circumferentially provided with supporting units at intervals, the supporting units comprise supporting frames 110 fixedly installed along the radial direction of the clamp body 100, the clamping units 200 comprise mounting frames 220 fixedly installed along the radial direction of the clamp body 100, the mounting frames 220 are provided with fixing rods 221 fixedly installed and movable rods 222 movably installed along the radial direction of the clamp body 100, the fixing rods 221 are provided with clamping parts 210 at equal intervals, the clamping parts 210 are slidably installed on the fixing rods 221, the movable rods 222 are provided with movable parts 223 at equal intervals, the movable parts 223 are slidably installed on the movable rods 222, the fixing rods 221 and the adjusting shafts 311 are arranged in parallel, the movable rods 222 are located between the fixing rods 221 and the adjusting shafts 311, the movable parts 223 and the clamping parts 210 are arranged at intervals along the length direction of the movable rods 222, the adjacent movable parts 223 are connected with the clamping parts 225 through spacing connecting rods 225, two ends of the spacing connecting rods 225 are respectively hinged with the movable parts 223 and 210, the adjacent spacing rods 225 are arranged in a V shape, the adjusting shafts 311 are provided with adjusting sections A1 and A2 and A314 and A2 and a nut adjusting sections 310 are respectively arranged at intervals, the two opposite to the two adjusting sections 310 and the two adjusting sections are respectively hinged to the two adjusting sections 310 and the two adjusting sections are provided with nuts 310 and the adjusting sections, and the two adjusting sections are respectively provided with two adjusting nuts and the adjusting sections and the adjusting section 315 are respectively arranged correspondingly.

As shown in fig. 5 and 8, the a clutch gear 321 rotates to drive the a adjustment shaft 311 to rotate, the a adjustment shaft 311 rotates to adjust the two a nut portions 314 to approach or separate from each other, the adjustment movable lever 222 approaches the fixed lever 221 when approaching each other, and the adjustment movable lever 222 separates from the fixed lever 221 when the two a nut portions 314 separate from each other. The pitch link 225, the clamping portion 210, and the movable portion 223 interact to collectively adjust the pitch to increase as the movable lever 222 approaches the fixed lever 221, and the pitch link 225, the clamping portion 210, and the movable portion 223 interact to collectively adjust the pitch to decrease as the movable lever 222 moves away from the fixed lever 221.

The B adjusting unit 400 comprises a B adjusting shaft 410, the B adjusting shaft 410 and a driving gear are correspondingly arranged, a B1 adjusting section 411 and a B2 adjusting section 412 are arranged on the B adjusting shaft 410, the B1 adjusting section and the B2 adjusting section are threaded sections with opposite screw threads, a B ring nut sleeve 413 which forms a screw nut adjusting mechanism with the B adjusting section is respectively arranged on the B1 adjusting section and the B2 adjusting section, an A mounting part 414 which is correspondingly arranged with the B ring nut sleeve is also arranged on the A adjusting rod 311, a supporting connecting rod 415 is respectively arranged between the A mounting part 414 and the two B ring nuts 413, and two ends of the supporting connecting rod 415 are respectively hinged with the A mounting part 414 and the B ring nut 413, and the two supporting connecting rods 415 are arranged in a V shape.

The support frame 110 includes left and right support rails 111, the mounting frame 220 includes left and right mounting beams, the left and right mounting beams 229 are slidably mounted on the left and right support rails, respectively, and the a abutment 325 is provided on the jig body 100.

The fixed rod 221, the movable rod 222 and the A adjusting shaft 311 are all installed on the left and right installation beams 229, the movable rod 222 can slide along the left and right installation beams 229, the left and right installation beams 229 are slidably installed on the left and right support slide rails 111, when the B adjusting shaft 410 is rotated, the two B ring nut sleeves 413 can be adjusted to be close to or far away from each other, when the two B ring nut sleeves 413 are close to each other, the supporting connecting rod 415 adjusts the A adjusting shaft 311 to be far away from the center of the clamp body, the A adjusting shaft 311 drives the left and right installation beams 229 to slide on the left and right support slide rails 111, and drives the fixed rod 221 to be far away from the center of the clamp body. Finally, the outer diameter of the spiral is adjusted by rotating the B adjustment shaft 410.

As shown in fig. 9, in order to protect the a clutch gear 321 and the a drive gear 331, a protection case 120 is provided outside the gears.

A method for adjusting the posture of clutch-type welding fixture.

As shown in fig. 1-8, the method includes starting the B adjusting unit, for adjusting the clamping units 200 to a position close to the middle of the clamp body 100, so that each a clutch portion 320 on the a adjusting unit is in a transmission connection state, adjusting the a driving portion 330 on the a adjusting unit to synchronously adjust the spacing between each clamping opening 211 on each clamping unit 200, meeting the pitch requirement of a preset spiral line, and then restarting the B adjusting unit to adjust each clamping unit 200 to move towards a central position far from the clamp body 100, and adjusting each a clutch portion 320 to be in a transmission disconnection state, so as to meet the outer diameter requirement of the preset spiral line.

As shown in fig. 4 and 8, the B adjustment shaft 410 is rotated by rotating the rotation knob 411 on the B adjustment shaft 410. Firstly, the B adjusting shaft 410 is used for rotating and adjusting the a adjusting shaft 311 to be close to the B adjusting shaft 410, so that the a clutch gear 321 is meshed with the a driving gear 331, the a driving gear 331 is sleeved on the rotating handle 411, and the a clutch gear 321 is driven to rotate by rotating the a driving gear 331, so that the a adjusting shaft 311 is driven to rotate and adjust a proper pitch to adapt to the pitch of the pre-welded spiral blade.

The rotary knob 411 is then rotated to adjust each of the clamping ports 211 away from the center of the clamp body 100 to adjust the outer diameter of the spiral to the outer diameter of the pre-welded spiral blade. At this time, the a-rack 323 cooperates with the a-clutch gear 321 to restrict rotation of the a-adjustment shaft 311 so that the pitch is unchanged.

As shown in fig. 5-7, the a clutch 320 is formed by using a movably mounted a clutch gear, and the transition of the a clutch 320 between the transmission connected state and the transmission disconnected state is accomplished by adjusting the movement of the clutch gear.

An a limiting part 322 is also arranged beside the a clutch gear 321, and the a limiting part 322 is used for limiting the rotation freedom degree of the a clutch gear 321 when the transmission is disconnected.

The a-rack 323 movably mounted relative to the a-clutch gear 321 is adopted to form the a-limiting part 322, the a-rack 323 is adjusted to be meshed with the a-gear, and the degree of freedom of the a-rack 323 along the length direction is limited, so that the degree of freedom of the a-clutch gear 321 is limited.

The a-rack 323 is disposed outside the a-clutch gear 321, and the a-rack 323 is disposed to be floatingly mounted in the radial direction of the clamp body 100, and when the clamp unit 200 approaches the center of the clamp body 100, the a-abutment 325 on the clamp body 100 abuts against the a-rack 323 to separate the a-rack 323 from the a-clutch gear 321.

As shown in fig. 4 and 8, the a clamping unit 200 is movably mounted on the clamping body 100 along the radial direction of the clamping body 100, the a adjusting part 310 is formed by adopting the a adjusting shaft 311, the clamping part 210 is slidably mounted on the fixed rod 221 on the clamping unit 200 at equal intervals, the movable rod 222 on the clamping unit 200 is provided with movable parts 223 which are movably mounted at equal intervals, each movable part 223 is assembled and connected with the clamping part 210 through a spacing connecting rod 225, and the rotation of the a adjusting shaft 311 is adjusted through the a clutch gear 321 to realize the adjustment of the spacing between the movable rod 222 and the fixed rod 221.

As shown in fig. 8, two A1 adjusting sections 312 and A2 adjusting section 313 with opposite screw threads are arranged on an a adjusting shaft 311, an a nut portion 314 is respectively arranged on the A1 adjusting section and the A2 adjusting section, an a adjusting portion 310 is also arranged on a movable rod 222, the a adjusting portion 310 and the a nut portion 314 are connected by an adjusting connecting rod 315, the a adjusting shaft 311 is rotated to enable the distance between the a adjusting shaft 311 and the movable rod 222 to change in a trend, the distance between the movable rod 222 and the fixed rod 221 to change in a trend b, the trends a and b are opposite, and the trend a is that the distance is increased or decreased.

As shown in fig. 6 to 8, by providing a B adjustment shaft 410 at the center of the clamp body 100, providing B1 adjustment sections 411 and B2 adjustment sections 412 with opposite screw threads on the B adjustment shaft 410, respectively providing B ring nut sleeves 413 forming a screw nut adjustment mechanism with the B1 adjustment sections and the B2 adjustment sections, providing an a mounting portion 414 on the clamp unit 200, connecting the a mounting portion 414 and the two B ring nuts 413 with a support link 415, and rotating the B adjustment shaft 410 to move the clamp unit 200 toward or away from the center of the clamp body 100.

As shown in fig. 6 to 7, the a drive gear 331 is used to form the a drive portion 330, and the a clutch gear 321 is disposed in meshing engagement with the a drive gear 331 when in a transmission connection state.

As shown in fig. 8, the a mounting portion 414 is provided on the a adjustment shaft 311, the B1 adjustment section 411 and the B2 adjustment section 412 are provided at both ends of the B adjustment shaft 410, and the A1 adjustment section 312 and the A2 adjustment section 313 are provided at both ends of the a adjustment shaft 311.

As shown in fig. 8, it is of course also possible to adjust the distance between the a adjustment shaft 311 and the movable lever 222, and the distance between the a adjustment shaft 311 and the B adjustment shaft 410, using a common device such as a cylinder. Compared with the air cylinder, the mechanical spacing adjustment mode is relatively more reliable, simple in structure and low in cost.

The step of welding and assembling the helical blade by adopting the welding assembly fixture posture adjusting mechanism comprises the steps of firstly adjusting the upper clamping unit 200 of the welding assembly fixture to a position close to the center, adjusting the screw pitch of the clamping opening 211 to enable the screw pitch of the clamping opening to be consistent with a preset value, and then adjusting the clamping unit 200 to move outwards to enable the position of the clamping opening 211 to correspond to the outer diameter of the helical blade. Then assemble the steel cylinder on steel cylinder assembly device 700, then start running gear 1000 and stretch into the steel cylinder with welding assembly jig, start support frame (supporting cylinder 1010) and retract in proper order simultaneously, start and draw device 900 and connect and draw welding assembly jig, after helical blade is in place completely, start welding device 600 and fix temporarily in spot welding, the steel cylinder is adjusted in step through steel cylinder assembly device 700 and material turning support frame 1020 respectively and the anchor clamps are rotated and are realized in different positions in the spot welding, then withdraw from welding assembly jig and joining and draw the device, then adopt welding device 600 to carry out spiral welding, when spiral welding, the steel cylinder rotates, welder 610 translates along the length direction of steel cylinder for both weld as an organic wholely completely.

According to the gesture adjusting mechanism of the welding assembly fixture and the gesture adjusting method of the clutch type welding fixture, provided by the invention, the preset screw pitch and the preset outer diameter of the clamping opening on the welding assembly fixture can be adjusted, the screw blade with the outer diameter of any screw pitch can be matched, the screw blade can be firmly supported and positioned, and finally, the screw blade is assembled with the steel cylinder, and the screw blade and the steel cylinder are firmly connected through the welding device.

The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention. Structures, devices and methods of operation not specifically described and illustrated herein, unless otherwise indicated and limited, are implemented according to conventional means in the art.

Claims

1. The method for adjusting the posture of the clutch type welding fixture is characterized by comprising the following steps of: the clamping device comprises a B adjusting unit, a transmission connecting unit and a transmission connecting unit, wherein the B adjusting unit is used for adjusting the clamping units to a position close to the middle of a clamp body, the A driving unit is used for adjusting the interval between clamping ports on the clamping units synchronously to meet the pitch requirement of a preset spiral line, then the B adjusting unit is started again to adjust the clamping units to move towards the central position far from the clamp body, and the A clutch parts are adjusted to be in a transmission disconnecting state to meet the outer diameter requirement of the preset spiral line;

clamping parts are arranged on the clamping units at intervals, the clamping parts are provided with clamping openings, each clamping opening on each clamping part is positioned on a preset spiral line, an A adjusting unit for adjusting the pitch of the preset spiral line and a B adjusting unit for adjusting the outer diameter of the preset spiral line are also arranged on the clamp body, each A adjusting unit comprises a corresponding A adjusting part, a corresponding A clutch part and a corresponding A driving part, each A clutch part is respectively arranged corresponding to each A adjusting part, each A driving part is in transmission connection with each A adjusting part through each A clutch part, and the preset spiral line is a spiral line consistent with the state of a spiral blade needing to be adjusted and fixed;

the A adjusting part comprises an A adjusting shaft which is rotatably arranged on the A clamping unit, the A adjusting shaft is connected with each clamping part through an A transmission component, the length direction of the A adjusting shaft is consistent with the length direction of a preset spiral line, the clamping unit is slidably arranged along the radial direction of the clamp body, and the A clutch part is arranged at one end of the A adjusting shaft; the A clutch part comprises an A clutch gear arranged on the A adjusting shaft; the A driving part comprises an A driving gear which is rotatably arranged on the clamp body, and the centers of the A driving gear and the clamp body are overlapped;

the B adjusting unit comprises a B adjusting shaft, the B adjusting shaft and the driving gear are correspondingly arranged, a B1 adjusting section and a B2 adjusting section are arranged on the B adjusting shaft, the B1 adjusting section and the B2 adjusting section are threaded sections with opposite screw threads, the B1 adjusting section and the B2 adjusting section are respectively provided with a B ring nut sleeve which forms a screw nut adjusting mechanism, the A adjusting rod is also provided with an A mounting part which is correspondingly arranged with the B ring nut sleeve, a supporting connecting rod is respectively arranged between the A mounting part and the two B ring nuts, two ends of the supporting connecting rod are respectively hinged with the A mounting part and the B ring nuts, and the two supporting connecting rods are arranged in a V shape.

2. The posture adjustment method of a welding jig according to claim 1, characterized in that: the clutch gear is movably arranged to form the clutch A, and the clutch A is adjusted to move to realize the conversion between a transmission connection state and a transmission disconnection state.

3. The posture adjustment method of a welding jig according to claim 2, characterized in that: an A limiting part is arranged beside the A clutch gear, and the A limiting part is used for limiting the rotation freedom degree of the A clutch gear when the A clutch gear is in a transmission disconnection state.

4. A posture adjustment method of a welding jig according to claim 3, characterized in that: the A-rack which is movably arranged relative to the A-clutch gear is adopted to form an A limiting part, the A-rack is adjusted to be meshed with the A-gear, and the freedom degree of the A-rack along the length direction of the A-rack is limited, so that the limitation of the freedom degree of the A-clutch gear is realized.

5. The posture adjustment method of a welding jig according to claim 4, characterized in that: the A rack is arranged on the outer side of the A clutch gear, the A rack is arranged to be mounted in a floating mode along the radial direction of the clamp body, and when the clamping unit is close to the center of the clamp body, the abutting part on the clamp body abuts against the A rack to enable the A rack to be separated from the A clutch gear.

6. The posture adjustment method of a welding jig according to claim 5, characterized in that: the clamping unit A is movably mounted on the clamp body along the radial direction of the clamp body, the regulating part A is formed by adopting the regulating shaft A, the clamping parts are slidably mounted on the fixed rods on the clamping unit at equal intervals, the movable rods on the clamping unit are provided with movable parts which are movably mounted at equal intervals, the movable parts are assembled and connected with the clamping parts through interval connecting rods, and the regulating shaft A is regulated to rotate through the clutch gear so as to realize the adjustment of the interval between the movable rods and the fixed rods.

7. The posture adjustment method of a welding jig according to claim 6, characterized in that: the adjusting shaft A is provided with two adjusting sections A1 and A2 with opposite screw threads, the adjusting sections A1 and A2 are respectively provided with a nut part, the movable rod is also provided with an adjusting part, the adjusting connecting rod is used for connecting the adjusting part A and the nut part A, the adjusting shaft A is rotated to enable the distance between the adjusting shaft A and the movable rod to change in a trend, the distance between the movable rod and the fixed rod to change in a trend b, the trends a and b are opposite, and the trend a is that the distance is increased or decreased.

8. The posture adjustment method of a welding jig according to claim 1, characterized in that: through setting up B regulating spindle in the center department of anchor clamps body, set up screw thread on the B regulating spindle and revolve to opposite B1, B2 regulating section, set up respectively on B1, B2 regulating section and constitute the B ring nut cover of feed screw nut adjustment mechanism rather than it, set up A installation department on the clamping unit, adopt the support connecting rod to connect A installation department and two B ring nuts, rotate B regulating spindle and make the clamping unit be close to or keep away from anchor clamps body center removal.

9. The posture adjustment method of a welding jig according to claim 5, characterized in that: the A driving part is formed by adopting an A driving gear, and the A clutch gear is meshed with the A driving gear when the A clutch gear is in a transmission connection state.

10. The posture adjustment method of a welding jig according to claim 8, characterized in that: the A installation part is arranged on the A adjusting shaft, B1 adjusting sections and B2 adjusting sections are respectively arranged at two ends of the B adjusting shaft, and A1 adjusting sections and A2 adjusting sections are respectively arranged at two ends of the A adjusting shaft.